New Guy Help

Hey boys... First post ever here!! I'm 6'2" 210 and am new to FreeRide Mtnbiking. Each time I've been out riding (Vietnam, Milford, MA) so far I've either banged myself up pretty bad or more importantly I've had problems with my bike... I have an '08 Spec Enduro. Have bent up rear wheel (replaced it with an oversized 32 Spoke Rear wheel by LOCO) and rear derailleur and have gone thru two rear tires (running tubeless) and yesterday a front tire and front wheel is slightly off now too. It can be trued I think but it's a cross country wheel so I think it's only a matter of time.. Biggest I've hit so far is like a 4-5 foot drop. Here's my Question: On my bike, how big of a front wheel and tire can I put on? not too worried about wieght, I'm just sick of breaking down.. I did a search on this thread, but don't know how big I can go or what you'd recommend for an 08 Enduro with the 25mm thru axle.... Also, tire pressure? been running 25-30 psi which could be part of my problem. All this being said I am 100% Obsessed with this sport!!!! Thanks in advance. Mike